# File lib/facter/util/memory.rb, line 8
  def self.meminfo_number(tag)
    memsize = ""
    size = [0]
    File.readlines("/proc/meminfo").each do |l|
      size = $1.to_f if l =~ /^#{tag}:\s+(\d+)\s+\S+/
      if tag == "MemFree" &&
          l =~ /^(?:Buffers|Cached):\s+(\d+)\s+\S+/
        size += $1.to_f
      end
    end
    size / 1024.0
  end